On 20/01/2012 23:20, Michael Schwartz wrote:

Hi,

Hi Michael,

Can new UDCs be written for CONFIG_USB_DEVICE or is that deprecated in favour of CONFIG_USB_GADGET?

I have not read any clear statement about this, but IMHO we should consider CONFIG_USB_DEVICE obsolete and move to CONFIG_USB_GADGET.

If that is the case and CONFIG_USB_DEVICE is deprecated, if I want to get USBTTY enabled for a currently unsupported UDC I would need to port USBTTY to CONFIG_USB_GADGET;

Yes, that is right - there is currently no support for the serial gadget.

is there interest in that effort or is there some alternative?

This is very interesting !

There is a lot of boards using CONFIG_USB_DEVICE. We cannot drop then CONFIG_USB_DEVICE, but new boards must use the new interface.

Best regards, Stefano Babic